Question

In ∆abc de||Bc ad=x+1 db=x-1 ae=x+3 ec=x find x

Answer 1

Answer:

x=3

Step-by-step explanation:

AD/DB=AE/EC

x+1/x-1=x+3/x

x(x+1)=(x-1)(x+3)

x²+x=x²+3x-x-3

x=2x-3

2x-x=3

x=3